IoT

I already got this Atomy air purifier (AAP-KR19W) running locally on Home Assistant and replaced its dust sensor in earlier posts, and it's been running well since. This time the filters were due for a change, so here's that. The two-filter-set design The best thing about this purifier is its oversized filter system: a black deodorizing filter and a white non-woven filter stacked together. Since it's a large unit, filters go in both the top and bottom, so a full replacement means buying two of these stacked sets. ...

The wallpad that comes standard in most Korean apartments is wired into the lighting, heating, ventilation, gas valve, and even the elevator call button, which makes it both an appealing target and something you eventually have to deal with if you're serious about a smart home. The new apartment I moved into has a Commax wallpad installed. This post covers the first step toward Home Assistant integration: analyzing the hardware and locating the communication lines. ...

Breathing New Life into the Atomy Air Purifier: PMS9003M Sensor Installation In my previous post, I documented the complete local integration of an abandoned Atomy Air Purifier (AAP-KR19W) into Home Assistant without relying on the dead official cloud servers. While the integration was a huge success, there was one minor issue: the physical laser dust sensor module inside the device was either broken or missing. As a result, the particulate matter (PM) readings on my Home Assistant dashboard were stuck at 0. ...

Successful Home Assistant Local Integration for Abandoned Atomy Air Purifier I recently brought home an Atomy air purifier (AAP-KR19W) that was sitting unused at my parents' house. The hardware performance and filter condition were still great, so I decided to integrate it into my Home Assistant smart home setup for automated air quality control. However, when I tried connecting to its official app, it completely failed. After contacting Atomy Customer Service, I received a surprising response: "The third-party vendor responsible for developing the app and managing the cloud servers went out of business, so service support is permanently discontinued." Looking up the app store confirmed that the iOS app was completely removed, with only an unofficial Android APK floating around the internet. ...